CN113691053B - Motor modular liquid cooling machine shell and manufacturing method thereof - Google Patents

Motor modular liquid cooling machine shell and manufacturing method thereof Download PDF

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Publication number
CN113691053B
CN113691053B CN202110997733.7A CN202110997733A CN113691053B CN 113691053 B CN113691053 B CN 113691053B CN 202110997733 A CN202110997733 A CN 202110997733A CN 113691053 B CN113691053 B CN 113691053B
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Prior art keywords
modular
machine shell
frame
modular frame
cooling
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CN113691053A (en
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花为
于雯斐
丁石川
章恒亮
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Yancheng New Energy Automobile Research Institute Of Southeast University
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Yancheng New Energy Automobile Research Institute Of Southeast University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention discloses a motor modular liquid cooling machine shell and a manufacturing method thereof, wherein the machine shell modular liquid cooling machine shell comprises a machine shell middle modular frame, a machine shell front end cover is installed at the front end of the machine shell middle modular frame, a machine shell rear end cover is installed at the rear end of the machine shell middle modular frame, a stator assembly is installed in the machine shell middle modular frame, a plurality of groups of machine shell middle modular frames are arranged in the machine shell middle modular frame, and the plurality of groups of machine shell middle modular frames are fixedly installed by adopting buckles; the middle modular frame of the machine shell comprises an outer modular frame and an inner modular frame, and the outer arc surface of the inner modular frame is provided with a modular cooling groove; after adopting above-mentioned structure, make things convenient for the installation and the dismantlement of casing middle part modularization frame, reduced cooling liquid pressure loss simultaneously to make the temperature on the casing middle part modularization frame more even, avoid the casing middle part modularization frame to take place inhomogeneous deformation.

Description

Motor modular liquid cooling machine shell and manufacturing method thereof
Technical Field
The invention relates to the technical field of motor cooling, in particular to a motor modularized liquid cooling shell and a manufacturing method thereof.
Background
Although the permanent magnet synchronous motor has the advantages of small volume and high power density, and has been widely applied to the fields of electric automobiles, industrial manufacturing, aerospace and the like, along with the gradual miniaturization of the motor volume and the gradual increase of the power density, heat caused by internal loss of the motor is difficult to dissipate in time, and the risks of damaged winding insulation and demagnetization of permanent magnets are inevitably caused. At present, the cooling mode of the permanent magnet synchronous motor mainly comprises forced air cooling and liquid cooling, and the liquid cooling mode is far better than the forced air cooling in effect and noise, so that the liquid cooling is widely applied to high-power dense motors.
The prior art typically mounts a complete liquid cooled housing hot jacket outside the stator assembly. However, conventional liquid cooled enclosures have the following problems: 1) once the device is installed, the device is difficult to disassemble, maintain and reuse, and often needs to be disassembled destructively, thereby causing resource waste; 2) the processing of the complete liquid cooling machine shell is time-consuming and labor-consuming, and the processing cost is too high; 3) too long coolant passages result in too large a coolant flow resistance, wasting fluid energy and large coolant pressure losses.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a motor modularized liquid cooling machine shell and a manufacturing method thereof, wherein the whole motor modularized liquid cooling machine shell is convenient to mount and dismount by arranging a plurality of groups of machine shell middle modularized frames, so that resource waste is avoided, the plurality of groups of machine shell middle modularized frames are simpler to process, the motor modularized liquid cooling machine shell is suitable for motors with any size, the cost of manufacturing equipment of motor shells with different sizes is reduced, and the cost is reduced.
The purpose of the invention can be realized by the following technical scheme:
a modular liquid cooling machine shell of a motor comprises a modular frame in the middle of a machine shell, wherein a machine shell front end cover is installed at the front end of the modular frame in the middle of the machine shell, a machine shell rear end cover is installed at the rear end of the modular frame in the middle of the machine shell, a stator assembly is installed inside the modular frame in the middle of the machine shell, a plurality of groups of modular frames in the middle of the machine shell are arranged, and the modular frames in the middle of the machine shell are fixedly installed by adopting buckles;
the middle modular frame of the machine shell comprises an outer modular frame and an inner modular frame, and a modular cooling groove is formed in the outer arc surface of the inner modular frame.
As a further scheme of the invention: the modular frame in the middle of the machine shell is provided with two groups.
As a further scheme of the invention: three sets of modular frames are arranged in the middle of the machine shell.
As a further scheme of the invention: the modular frame in the middle of the machine shell is provided with N groups.
As a further scheme of the invention: the modular cooling groove is in a circumferential spiral shape or an axial S shape.
As a further scheme of the invention: the modular cooling channels cooperate with the inner side of the outer modular frame to form modular cooling passages.
As a further scheme of the invention: outer modularization frame surface one side is provided with the water inlet, and the opposite side is provided with the delivery port, and the water inlet runs through outer modularization frame and forms water inlet channel, and the delivery port runs through outer modularization frame and forms water outlet channel.
As a further scheme of the invention: the water inlet channel and the water outlet channel are communicated with the modular cooling channel.
As a further scheme of the invention: and one end of the inner layer modular frame is provided with an assembly boss, and the other end of the inner layer modular frame is provided with an assembly clamping groove, wherein the assembly boss is matched with the assembly clamping groove.
A manufacturing method of a motor modularized liquid cooling machine shell comprises the following steps:
firstly, milling a front end cover and a rear end cover of a machine shell by using sectional materials, and then manufacturing a plurality of groups of blanks of an outer layer modular frame and an inner layer modular frame by using an extrusion forming process;
processing the blank of the inner-layer modular frame out of a modular cooling tank, and then processing the blank of the outer-layer modular frame out of a water inlet and a water outlet;
processing a sealing ring groove on the periphery of the modular cooling groove, placing a sealing gasket, and correspondingly welding a plurality of groups of blanks of the outer layer modular frame and the inner layer modular frame into a whole to form a plurality of groups of blanks of the middle modular frame of the shell;
step four, performing finish machining on the blanks of the multiple groups of the modularized frames in the middle of the machine shell to obtain multiple groups of the modularized frames in the middle of the machine shell;
placing a plurality of groups of the modular frames in the middle of the machine shell outside the stator assembly in sequence along the circumferential direction to form a modular frame whole in the middle of the machine shell of the motor;
and step six, fixing the front end cover and the rear end cover of the machine shell at the two ends of the whole modular frame in the middle of the motor shell to form the complete motor modular liquid cooling machine shell.
The invention has the beneficial effects that:
1. according to the invention, the modular frame in the middle of the multiple groups of machine shells is arranged, so that the whole motor modular liquid cooling machine shell is convenient to mount and dismount, resource waste is avoided, and the maintenance, upgrading and reconstruction of the motor are facilitated.
2. The modular frame in the middle of the multiple groups of machine shells is simpler to process, is suitable for motors with any size, reduces the cost of manufacturing equipment of motor shells with different sizes, lowers the cost,
3. The modular frame in the middle of the shell also shortens the length of the modular cooling channel, reduces the pressure loss of the cooling liquid, ensures that the temperature on the modular frame in the middle of the shell is more uniform, avoids the modular frame in the middle of the shell from generating uneven deformation, has good cooling effect, and is beneficial to the heat dissipation of the motor and the improvement of the power density.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the area A in FIG. 1;
FIG. 3 is a schematic side view of the overall structure of embodiment 1 of the present invention;
FIG. 4 is a schematic view of the inner modular frame of the present invention with axial S-shaped modular cooling channels;
FIG. 5 is a schematic side view of the whole structure of embodiment 2 of the present invention;
FIG. 6 is a schematic view of a middle modular frame structure of a cabinet according to embodiment 2 of the present invention;
fig. 7 is an exploded view of the modular frame structure in the middle of the cabinet according to embodiment 2 of the present invention.
In the figure: 1. a front end cover of the shell; 2. a chassis middle modular frame; 21. an outer modular frame; 22. an inner layer modular frame; 23. a modular cooling tank; 24. a water inlet; 25. a water outlet; 3. a modular cooling channel; 4. a water inlet channel; 5. a water outlet channel; 6. a stator assembly; 7. a rear end cover of the casing; 221. assembling a boss; 222. and assembling a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-4, a motor modular liquid cooling cabinet, including two sets of cabinet middle part modular frame 2, two sets of cabinet middle part modular frame 2 adopt the buckle to fix, and the front end cooperation of two sets of cabinet middle part modular frame 2 installs cabinet front end housing 1, the rear end cooperation of two sets of cabinet middle part modular frame 2 installs cabinet rear end housing 7, wherein two sets of cabinet middle part modular frame 2 inside cooperation installs stator module 6, the heat that stator module 6 produced passes through cabinet middle part modular frame 2 and transmits to the external world, make the inside temperature of motor descend, simultaneously two sets of cabinet middle part modular frame 2 also easy to assemble and dismantle, and cabinet middle part modular frame 2 processing technology is simple, be applicable to the motor of arbitrary size, the expense of the not unidimensional motor casing manufacture equipment has been reduced, the cost is reduced.
The middle modular frame 2 of the casing comprises an outer modular frame 21 and an inner modular frame 22, the outer modular frame 21 and the inner modular frame 22 are combined and installed by waterproof glue or welding, a modular cooling groove 23 is formed in the outer arc surface of the inner modular frame 22, the modular cooling groove 23 is circumferentially spiral or axially S-shaped, the modular cooling groove 23 of the inner modular frame 22 is matched with the inner side surface of the outer modular frame 21 to form a modular cooling channel 3, cooling liquid is circulated through the modular cooling channel 3 to take away heat emitted by a stator assembly 6 in the motor, a water inlet 24 is formed in one side of the outer surface of the outer modular frame 21, a water outlet 25 is formed in the other side of the outer surface of the outer modular frame 21, and the water inlet 24 penetrates through the outer modular frame 21 to form a water inlet channel 4, the water outlet 25 penetrates through the outer layer modular frame 21 to form a water outlet channel 5, wherein the water inlet channel 4 and the water outlet channel 5 are both communicated with the modular cooling channel 3, the cooling liquid is injected into the modular cooling channel 3 through the water inlet 24 to circulate the cooling liquid, and then the cooling liquid is discharged from the water outlet 25, and the heat transferred to the modular frame 2 in the middle of the shell can be taken away by the circulated cooling liquid, so that the heat dissipation effect is enhanced; and through setting up two sets of casing middle part modularization frame 2, shorten 3 lengths of modularization cooling channel, reduced cooling liquid pressure loss to make the temperature on the casing middle part modularization frame 2 more even, avoid casing middle part modularization frame 2 to take place inhomogeneous deformation, the cooling effect is good, is favorable to the heat dissipation of motor and the promotion of power density.
The inner modular frames 22 are provided with assembling bosses 221 at one end and assembling slots 222 at the other end, wherein the assembling bosses 221 are matched with the assembling slots 222, the two inner modular frames 22 are mounted with the assembling slots 222 through the assembling bosses 221 at corresponding positions, the assembling bosses 221 and the assembling slots 222 are mounted in a matched manner, so that the inner modular frames 22 are mounted at accurate positions without deviation, and the position of the two middle modular frames 2 is accurate when the two middle modular frames are mounted by using buckles.
The stator assembly 6 includes a stator core, windings, and a potting. And the inner layer modularization frame 22 is provided with a sealing ring groove along the periphery of the modularization cooling groove 23, and a sealing gasket is fixedly connected in the sealing ring groove to prevent the leakage of cooling liquid. The casing rear end cover 7 is provided with a junction box mounting hole inlet and outlet wire hole, the two casing middle modular frames 2 are connected with the casing front end cover 1 and the casing rear end cover 7 through fastening bolts, and the two casing middle modular frames 2 are fastened into a whole circle through the fastening bolts.
Example 2
As shown in fig. 5-7, the invention is provided with three sets of middle modular frames 2 of the casing, the middle modular frames 2 of the casing are also fixedly installed together by using buckles, and the middle modular frames 2 of the casing are arranged to further improve the heat dissipation effect of the motor, so that the modular frames 2 in the middle of the casing are prevented from being deformed unevenly, and the improvement of power density is facilitated. The other structure is the same as embodiment 1.
Example 3
According to the invention, N groups of the middle part modular frames 2 of the machine shell are arranged, the N groups of the middle part modular frames 2 of the machine shell are fixedly installed together by adopting buckles, the heat dissipation effect of the motor is optimal by arranging the N groups of the middle part modular frames 2 of the machine shell, the non-uniform deformation of the middle part modular frames 2 of the machine shell is avoided, the power density is improved to the highest degree, wherein N is an integer and is more than three. The other structure is the same as embodiment 1.
As shown in fig. 1 to 7, a method for manufacturing a modular liquid cooling enclosure of a motor includes the following steps:
firstly, processing a front end cover 1 and a rear end cover 7 of a machine shell through extrusion, casting or profile milling, and then manufacturing a plurality of groups of blanks of an outer layer modular frame 21 and an inner layer modular frame 22 through an extrusion forming process; the extrusion forming process is a conventional extrusion forming process;
step two, milling the blank of the inner layer modular frame 22 in the step one to form a circumferential spiral or axial S-shaped modular cooling groove 23, and then processing the blank of the outer layer modular frame 21 in the step one to form a water inlet 24 and a water outlet 25 at the starting position and the ending position of the modular cooling groove 23 corresponding to the inner layer modular frame 22;
step three, milling a circle of sealing ring groove at the periphery of the modular cooling groove 23 in the step two, placing a sealing gasket, and then welding or gluing the blanks of the multiple groups of outer layer modular frames 21 and inner layer modular frames 22 in the step two into a whole to form multiple groups of blanks of the middle modular frames 2 of the enclosure;
step four, performing finish machining on the blanks of the multiple groups of the modular frames 2 in the middle of the machine shell in the step three, controlling the precision of contact surfaces and processing spigot openings to form multiple groups of finished products of the modular frames 2 in the middle of the machine shell;
step five, sequentially placing the plurality of groups of machine shell middle modular frames 2 in the step four outside the stator assembly 6 along the circumferential direction to form the whole machine shell middle modular frame 2;
and step six, fixing the front end cover 1 and the rear end cover 7 of the machine shell in the step one at two ends of the whole middle modular frame 2 of the motor shell in the step five by fastening bolts to form the complete motor modular liquid cooling machine shell.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (9)

1. A motor modular liquid cooling machine shell comprises a machine shell middle modular frame (2), wherein a machine shell front end cover (1) is installed at the front end of the machine shell middle modular frame (2), a machine shell rear end cover (7) is installed at the rear end of the machine shell middle modular frame (2), and a stator assembly (6) is installed inside the machine shell middle modular frame (2), and the motor modular liquid cooling machine shell is characterized in that a plurality of groups of machine shell middle modular frames (2) are arranged, and the plurality of groups of machine shell middle modular frames (2) are fixedly installed by adopting buckles;
the middle modular frame (2) of the machine shell comprises an outer modular frame (21) and an inner modular frame (22), a water inlet (24) is formed in one side of the outer surface of the outer modular frame (21), a water outlet (25) is formed in the other side of the outer surface of the outer modular frame, and a modular cooling groove (23) is formed in the outer arc surface of the inner modular frame (22);
the manufacturing method of the motor modularized liquid cooling machine shell comprises the following steps:
firstly, milling a front end cover (1) and a rear end cover (7) of a machine shell by using sectional materials, and then manufacturing a plurality of groups of blanks of an outer layer modular frame (21) and an inner layer modular frame (22) by using an extrusion forming process;
step two, machining a blank of the inner layer modular frame (22) out of a modular cooling groove (23), and then machining a blank of the outer layer modular frame (21) into a water inlet (24) and a water outlet (25);
thirdly, machining sealing ring grooves on the peripheries of the modular cooling grooves (23), placing sealing gaskets, and correspondingly welding a plurality of groups of blanks of the outer layer modular frames (21) and the inner layer modular frames (22) into a whole to form a plurality of groups of blanks of the middle modular frames (2) of the shell;
step four, performing finish machining on the blanks of the multiple groups of the middle modular framework (2) of the enclosure to obtain multiple groups of finished modular framework (2) of the middle of the enclosure;
placing a plurality of groups of the modular frames (2) in the middle of the machine shell outside the stator assembly (6) in sequence along the circumferential direction to form the whole modular frame (2) in the middle of the machine shell of the motor;
and step six, fixing the front end cover (1) and the rear end cover (7) of the machine shell at the two integral ends of the modular frame (2) in the middle of the motor shell to form the complete modular liquid cooling machine shell of the motor.
2. An electric machine modular liquid cooled cabinet according to claim 1, characterized in that there are two sets of modular frames (2) in the middle of the cabinet.
3. An electric machine modular liquid cooled cabinet according to claim 1, characterized in that there are three sets of modular frames (2) in the middle of the cabinet.
4. An electric machine modular liquid cooled cabinet according to claim 1, characterized in that the modular frame (2) in the middle of the cabinet is provided with N sets, where N is an integer and N is greater than three.
5. An electric machine modular liquid cooled enclosure according to claim 1 wherein the modular cooling channels (23) are of a circumferential helical or axial S-shape.
6. An electric machine modular liquid cooled cabinet according to claim 5 wherein the modular cooling channels (23) cooperate with the inner side of the outer modular frame (21) to form the modular cooling passages (3).
7. The electric machine modular liquid cooled cabinet of claim 1, wherein the water inlet (24) extends through the outer modular frame (21) to form a water inlet passage (4) and the water outlet (25) extends through the outer modular frame (21) to form a water outlet passage (5).
8. An electric machine modular liquid cooled enclosure according to claim 7 wherein the inlet (4) and outlet (5) passages are in communication with the modular cooling passages (3).
9. The motor modular liquid cooling enclosure of claim 1, wherein the inner modular frame (22) has an assembly boss (221) at one end and an assembly slot (222) at the other end, wherein the assembly boss (221) is adapted to the assembly slot (222).
CN202110997733.7A 2021-08-27 2021-08-27 Motor modular liquid cooling machine shell and manufacturing method thereof Active CN113691053B (en)

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Publication number Priority date Publication date Assignee Title
JP5796346B2 (en) * 2011-05-17 2015-10-21 日産自動車株式会社 Manufacturing method of stator housing
CN203871968U (en) * 2014-04-18 2014-10-08 比亚迪股份有限公司 Motor cooling assembly and electric vehicle equipped with the same
CN106911228A (en) * 2015-12-22 2017-06-30 大陆汽车投资（上海）有限公司 Integrated driving device used for electric vehicle
DE112017008053T5 (en) * 2017-09-18 2020-06-18 Robert Bosch Gmbh Electric motor and inverter arrangement
CN109756055A (en) * 2017-11-01 2019-05-14 中车株洲电力机车研究所有限公司 Full-enclosed permanent-magnet motor ventilation cooling structure
TWI656717B (en) * 2017-11-30 2019-04-11 財團法人工業技術研究院 Drive structure connecting motor cooling structure
US10700571B2 (en) * 2017-12-08 2020-06-30 Toyota Motor Engineering & Manufacturing North America, Inc. Cooling system for vehicle motor drive
CN108173383A (en) * 2018-02-28 2018-06-15 余承赋 Fluid-cooled electrical machine shell and its manufacturing method

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